702649 has 4 divisors (see below), whose sum is σ = 704740. Its totient is φ = 700560.

The previous prime is 702623. The next prime is 702671. The reversal of 702649 is 946207.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 129600 + 573049 = 360^2 + 757^2 .

It is a cyclic number.

It is not a de Polignac number, because 702649 - 2⁹ = 702137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (702679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414 + ... + 1255.

It is an arithmetic number, because the mean of its divisors is an integer number (176185).

2⁷⁰²⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

702649 is a deficient number, since it is larger than the sum of its proper divisors (2091).

702649 is a wasteful number, since it uses less digits than its factorization.

702649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 702649 is about 838.2416119473. The cubic root of 702649 is about 88.9022619347.

The spelling of 702649 in words is "seven hundred two thousand, six hundred forty-nine".